DEC VT20 boot device

[Lars Brinkhoff]

Paul Birkel wrote:
>>I wonder if, maybe, it used the same protocol as the GT40, which also
>>had a boot-over-serial line capability.
>
> Section 5.1.1 Bootstrap Loader describes the packed-and-serialized
> 6-bit "byte" stream

I have the GT40 boot ROM assembled on a PDP-10 host and used for booting
by SIMH.  There is also a GTLOAD program which translates a PDP-11
binary on the PDP-10 host and sends it to the GT40.